Granted Patent
Utility
US 4,923,645 · App. 07/121,214
Sustained release of encapsulated molecules
Inventors:
Wen-Ghih Tsang, Andrew Magee
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Nov 16, 1987
Inventors
Wen-Ghih Tsang
Andrew Magee
Assignee (at issue)
Damon Biotech, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.